中文摘要：

基于脉冲管制冷机蓄冷器结构，提出了#400不锈钢丝网以及其与#300和#500组合而成的混合式蓄冷器填充方式。通过构建一单级分体式脉冲管制冷机测试平台，将#400及混合目数丝网分别填充至制冷机蓄冷器内进行整机实验，实验结果验证了低温制冷机蓄冷器冷热端分别填充高低目数丝网，可提高制冷机性能，是一种有效的蓄冷器优化方法。

英文摘要：

Based on a regenerator structure of a pulse tube cryocooler, it was proposed that #400 stain- less steel meshes screen and the combination of #300 or #500 with #400 could be filled into the pulse tube cryocooler regenerator respectively. A test platform was built for testing a single-stage pulse tube cryocooler, the #400 or the combinative meshes screen could be tested in its regenerator. Experiments were done and results showed that it was an effective optimization method to fill different meshes at the warm and cold ends of the cryocooler regenerator, which could improve the efficiency of the whole cryocooler.